MUSTANGBRKR02

iTrader: (91)

Well Let me start out by saying my current setup is a forged bottom end 370 with stock 317's. Speed inc TU1 cam truck manifold kit with a TC78. Car is running about 12lbs on the street and I haven't turned it up yet at the track. Transmission is a built th400 with a RMVB and TB. The rear is a MWC fab 9 with a 3.5 gear, spool, 35 spline axles and stock rear brakes for now. I have a 28" MT ET radial out back.

I am building a T6 modified truck manifold kit right now and am so torn between the many many options out there. I am looking at a budget of about 1600 for the turbo. I am looking at the S480, GT91, 4788 etc. I am torn as to what turbo can get me to my goal of 9.0x in the 1/4 at a weight of about 36-3800 (guess as of right now before it goes on a diet).

So who recommends what turbo and why?

Thanks

98Z28CobraKiller

iTrader: (17)

I'd go 91mm for sure on the compressor and 92ishmm exh wheel with a low A/R T6 (1.00-1.08ish) if it was me.

MUSTANGBRKR02

iTrader: (91)

Any particular brand or turbo Los?

Professor_speed

iTrader: (8)

for the money gt91

98Z28CobraKiller

iTrader: (17)

To be honest, I haven't shopped it yet so I'm not sure but that's what I'll be looking to get into next.

COOKIE MONSTER

iTrader: (5)

ProMod 88 because it's not too big for x275, and they make killer power.

MUSTANGBRKR02

iTrader: (91)

Yes but hell they are double the budget used.

WheelsUp84z

iTrader: (14)

91 i would say, but because it leaves room to grow later vice an 88 or s80, however i think you can meet your 9 sec goal with just the 88. I plan to do it on a stock ls1 and 76mm

Nitroused383

iTrader: (10)

Garrett or precision gt 4788. Will easily meet your goals and out spool anything else around.

PRAY HRD

iTrader: (119)

a gt4788 is rated to 1500HP so i would say it's more than you will need to get to that 9.0 @ 3600#'s! i just picked up 1 from a reputable private seller with a handful of 1/8 mile passes that looks brand new all over and a coated hot side for $1300. there's deals out there but the s91 is a great budget turbo. you can do an s88 and run deep 8's too and have a bit better spool.

MUSTANGBRKR02

iTrader: (91)

The 4788 is what I have been eyeballing. Just for the price vs power alone. I would love the S88 but those are harder to come by.

Nitroused383

iTrader: (10)

There is a used s88 in the for sale section with a recent rebuild for $1150. The bw stuff has a 96 mm turbine and will not spool quicker than a gt 4788. The bw s88 will have a little less back pressure though. Another option is the gt 50 series units. They are the same frame as the gt 47 but with a bigger turbine wheel.

Fbodyjunkie06

iTrader: (10)

T6 82mm billet compressor 96mm turbine 1.32 a/r from Work Turbo's is on sale for 1679 IIRC right now and is rated for 1300+ or a GT47 88mm compressor 98mm turbine T6 1.10 ar that's gonna be around 2k though also from Work.

MUSTANGBRKR02

iTrader: (91)

I plan on giving Reed a call as I get closer to purchasing the turbo.

SJMTuning

4788 will be fine should spool up decent even with a larger exhaust housing.

Ricky Bobby

I have a 91.5 from Reed at works turbo it made 1030 rwhp@ 18 psi , with no timing ,on a 434 cubes six bolt heads , ERL super deck , went 8.58 first Tim out on a lazy 1.50 60 ft

Fbodyjunkie06

iTrader: (10)

While true it won't be that much of a difference it's a 92mm vs. 96mm. There is a custom turbo work does and probably FI it's a garret frame but it's a 88/99mm comp/turbine.

Personally I think the billet 82/96 in a 1.32 would be perfect for what you want to do. If you go a little bigger on the compressor like an S88 then go a little bigger on the turbine too like the GTV-88 with the 88mm compressor and 99m turbine which is the custom turbo I was talking about in the above sentence, but it is 2300 which is well above what you wanted to do. Also if you go a little bigger tighten the a/r up also.

mike13

iTrader: (27)

Jose at forced induction built me a 83 billet comp with a 92 turbine for my 408. I haven't had a chance to try it out yet.

Nitroused383

iTrader: (10)

Here is some good threads to check out, keep your goals in mind. The GT 4788 is rated to 140lbs/min (1400hp) and uses a 92mm UHP wheel which is Garrett's newest design turbine wheel, it spools awesome. Sure you could throw on a bigger, badder more expensive 1500hp + turbo, but why unless you plan to use it all. If you're not using everything from the turbo the only thing you gain by going bigger is lag / spool.

I know it's a lot of links but you will find some good info from people who have actually ran these turbos.

http://www.yellowbullet.com/forum/sh...hlight=gt+4788

http://www.yellowbullet.com/forum/sh...hlight=gt+4788

http://www.yellowbullet.com/forum/sh...hlight=gt+4788

http://www.yellowbullet.com/forum/sh...hlight=gt+4788

http://www.yellowbullet.com/forum/sh...ad.php?t=99928

http://www.yellowbullet.com/forum/sh...d.php?t=424001

For ***** n giggles heres a is a 347" SBF with an out of the box GT47-88 with a 1.08 AR housing. The car weighs 3380 with the driver and has been a 5.12@141.50 on a Hooiser 275.

http://www.youtube.com/watch?v=eydTc...ature=youtu.be

MUSTANGBRKR02

iTrader: (91)

That is another that I was looking at a few days ago.

Definitely keep us informed on the results. If I am not mistaken you just sold a S380??


Thanks for the links. I will check them out and do some reading.